GHK Cu A naturally occurring copper peptide known for supporting skin renewal, collagen production, and overall tissue health. Amaira is where science meets longevity focused care. 246 NE 6th Ave Suite 100, A GHK Cu face serum appears blue because the active ingredient, GHK Cu ( copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue GHK Cu (Copper Peptide) Therapy in South Florida Prescription Consultation & Medical Evaluation Telehealth Florida Surgery & Weight Loss Center A GHK Cu face serum appears blue because the active ingredient, GHK Cu ( copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue